Car-coupling.



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(Applicatio med Feb. 2s, 1902.)

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'UNITED STATES` PATENT OFFICE.

CAR-COUPLING.

SPECIFICATION forming para of Letters Patent No. 704,888, dated July 15, 1902.r

Application iiled February 26, V1902- Serial No. 95,783. (No model) To @ZZ whom, t 7nd?! concern.-

Be it known that l, HENRY H. MARSHALL', a citizen of the United States, residing at Lincoln, in the county of Lancaster and State of Nebraska, have invented a new and useful Car-Coupling, of which the following is a specification. l

The invention-relates to improvements in car-couplings.

The object of the present invention is to improve the construction of car-couplings and to provide a simple and comparativelyr inexpensive one capable of coupling automatically and adapted to be readily setfor automatic uncoupliug.

The invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure 1 is a longitudinal sectional view of a car-coupling constructed in accordance with this invention and illustrating the arrangement of the verticallymovable pin and the locking-block when the knuckle is closed. Fig. 2 is a'horizontal sectional view, the knuckle being closed. Fig. 3 is a transverse sectional view, the lockingblock being shown in its engaging position in full lines and elevated in dotted lines. Fig. 4 is a detail perspective view of the lockingblock, the vertically-movable pin, and the supporting device. Figgvis a vertical sectional view of `the knuckle, illustrating the construction of the knuckle-pin and the arrangement of the spring for` opening the knuckle;

Like numerals of reference designate corresponding parts in all the figures of the drawlngs.

1 designates a draw-head' provided with a shank or draw-bar 2 and having a pivoted knuckle 23, and a knuckle-pin 24 is held against vertical movement `by means of a transverse fastening device 25, passing" through the eye of the knuckle and through the knuckle pin. The lower Vend of the knuckle-pin is extended to receive a coiled spring 26, having its upper end seated in a socket 27 of the knuckle-pin-receiving eye at the bottom of the draw-head. The draw-head is provided in the upper wall of the socket 27 with a recess for the reception of the upper end of the spring 26, which has its lower end arranged in al slot or bifurcation 29 of .the lower end of the knuckle-pin. The lower end of the spring is retained in the slot or bifurcation of the knuckle-pin by means of a key 30, arranged beneath the spring and passing through a suitable perforation of the knuckle-pin, By connecting the spring with the draw-head and with the knuckle-pin, which is liked to the knuckle, the latter is opened automatically when itis free to move.

The arm of the knuckle is engaged'by a pivoted block 3l, extending transversely of the draw-head in a suitable opening or cavity thereof and connected with a vertically-movable pin 32, arranged in a suitable slot or opening ofthe draw-head. The block 3l, which is arranged at an inclination when it is in engagement with the arm 33 of the knuckle, is pivoted at its upper or outer` end by a horizontal pin 34, and it is provided at its inner or rear edge with a recess 35, receiving the vertically-movable pin 32. The pin 32 is perforated for thereception of a pivot 36, which also passes through the block 3l, and the latter is perforated near its engaging end to receive a swinging supporting device 37, which is pivoted to the block by the said pivot 36. When the vertically-movable pin is raised, the block is lifted'to the position illustrated in dotted lines'in Fig. 3 of theaccoinpanying drawings,.and vthe swinging supporting device assumes a vertical position directly beneath the pivot 36, and thereby supports the block in the jsaidl elevated position. The knuckle is then free to open, and the arm 33 thereof in moving outward will strike the pivoted supporting device 37 and will swing the saine toward the pivoted end of the block,

whereby it is adapted to pass the supporting device. When the locking-block is in its inclined position, it presents an inclined lower face to the arm of the knuckle, which is adapted to engage the same when the knuckle closes, whereby the said arm 33 is adapted .to lift the block. After the arm of the knuckle passes the block in the closing-movementof the knuckle the said block will drop into engagement with the arm and 4lock the knuckle in its closed position. The pivoted block may be elevated when the knuckle is open, and the IOO arm 33 will then swing the supporting device to the position illustrated in full lines in Fig. 3 of the drawings when the knuckle closes.

It will be seen that the car-coupling is eX- ceedingly simple and inexpensive in construction, that it is capable of coupling automatically when two cars come together, and that the parts may be readily set for uncoupling to permit the knuckle to open freely.

What I claim isl. The combination of a draw-head, a pivoted knuckle, a vertically movable pin, a transversely-disposed block pivotally connected with the pin and arranged to swing upward and downward and adapted to engage the arm of the knuckle, and a pivoted supporting device arranged to swing transversely of the draw-head and adapted to hold the `block in an elevated position and arranged to be engaged by the arm of the knuckle, substantially as described.

2. The combination of a draw-head, a pivoted knuckle, a verticallymovable pin, a transversely-disposed block arranged to swing upward and downward and adapted to engage the arm of the knuckle and provided with a slot, a supporting device adapted to hold the block in an elevated position and arranged to be engaged by the arm of the knuckle, and

.a pin pivoting the support in the slot of the block and connecting the latter to the vertically-movable pin, substantially as described.

3. The combination ofa draw-head having a pivoted knuckle, a transverse block pivotally connected at one end with the draw-head and arranged to swing upward and downward and adapted to engage the arm of the knuckle, a support pivoted to the block and adapted to hold the latter in an elevated position and arranged to swing transversely of the drawhead and capable of swinging in either direction from a vertical position, and means for lifting the block, substantially as described.

4. The combination of a draw-head having a pivoted knuckle, a transversely-disposed locking-block engaging the knuckle and arranged to swing upward and downward,a vertically-movable piu connected with the block, and a supporting device pivoted to the block for holding the same in an elevated position, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

HENRY II. MARSHALL.

Vitnesses:

H. E. Woon, 1I. W. NOBLE. 

